13121875

素因数分解:

$5^5\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1$

素因数の和:74

約数の個数: 48

約数和(自身を含む): 19686240

約数和(自身を除く): 6564365

約数列:

[1, 5, 13, 17, 19, 25, 65, 85, 95, 125, 221, 247, 323, 325, 425, 475, 625, 1105, 1235, 1615, 1625, 2125, 2375, 3125, 4199, 5525, 6175, 8075, 8125, 10625, 11875, 20995, 27625, 30875, 40375, 40625, 53125, 59375, 104975, 138125, 154375, 201875, 524875, 690625, 771875, 1009375, 2624375, 13121875]

約数ペア:

[(1, 13121875), (5, 2624375), (13, 1009375), (17, 771875), (19, 690625), (25, 524875), (65, 201875), (85, 154375), (95, 138125), (125, 104975), (221, 59375), (247, 53125), (323, 40625), (325, 40375), (425, 30875), (475, 27625), (625, 20995), (1105, 11875), (1235, 10625), (1615, 8125), (1625, 8075), (2125, 6175), (2375, 5525), (3125, 4199)]